Disruptible envelop.



A. M. ROSENBLATT.

DISRUPTIBLE ENVELOP. APPLICATION FILED-APR. 29. 1916.

1,1 9 1,475. I Patented my 18, 1916.

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Specification of Letters Patent.

Patented July 18, 1916.

Application filed April 29, 1916. Serial N 0. 94,330.

T 0 all whom it may concern:

Be it known that I, ABRAHAM M. RosEN- BLATT, a subject of the Emperor of Austria- Hungary, residing in the city of New York, borough of Bronx, county of Bronx, and State of New York, have invented a certain new and useful Improved Disruptible Envelop, of which the following is a specification.

This invention is an improved envelop of the class embodying a string, thread or other opening means whereby the sealed envelop may be readily opened without the necessity of employing extraneous means and without endangering the contents of the envelop.

Generally speaking, the present invention embodies an envelop along one of the edges of which are positioned a plurality of loops of cord, thread, or the like, which loops are connected interiorly of the envelop, with the result that when tension is placed upon one of said loops a shearing action takes place which efiiciently cuts the envelop along the crease and exposes its contents in an accessible manner.

In the preferred embodiment of the invention all of the loops, save one, are preferabl so associated with the envelop as to be su stantially concealed thereby, the said single exceptional loop being clearly exposed to view whereby, when said loop is placed on a tension, the greatest eificiency in opening the envelop results.

The featuresof the invention other than those thus specified will be apparent from the following description read in conjunction with accompanying drawings.

In the accompanying drawings is illustrated one practical embodiment of the invention, but the showing therein made is for the purpose of illustration only and it is to be understood that the invention is not limited to the specific details shown.

Figure 1 is a rear View of an envelop embodying the present invention, the upper and lower flaps being shown in an extended position in the interests of clearness, and Fig. 2 is a back view of a closed envelop,the lower portion of which is shown-in section along the fold.

Referring to the drawings, A indicates an envelop of' any well-known or approved form provided with the usual side flaps a,

e an upper flap a and a lower flap a.

The present invention may be applied to any one or more of the four folds or edges of the envelop but, for the purpose of illustration, I have shown same as embodied in the fold of the lower flap a G designates a piece of cord, thread or other flexible material provided intermediate its length with a loop 0 sewed through the wall of the envelop in such manner as to embrace a portion thereof at the fold. The loop is united interiorly of the envelop in a half twist c and the ends of thread G extend in opposite directions along the interior of the fold to points near the end of the envelop where they pass through the wall thereof as at '0 Both ends of the thread are led toward one another exteriorly of the envelop and along the fold and again pass through the wall at the interior as at 0 the ends of thread C being tied to the diverging reaches of the thread C interiorly of the envelop in knots 0*. It will thus be apparent that three loops are formed, one at substantially the center of the envelop and one on either side thereof and near the lateral edges.

It will be manifest from the foregoing description that in opening the envelop the portion of the loop 0 which projects exteriorly of the envelop is grasped between the thumb and finger and pulled in a direction away from the envelop. This operation will lengthen out the loop and cause it to exert a shearing action upon the portion of the wall of the envelop which it embraces, with the result that that part of the fold-over interiorly of the loop is cut away. A continued pulling of the thread will cause the envelop to be torn along the crease or fold to the points 0 where the end of the loops is situated. A continued tension results inthe contracting of said end loops to shear that portion of the crease or fold embraced thereby.

In the accompanying drawin s I have shown the thread C and wall of t e envelop on a greatly increased scale in the interests of 'clearness, and the end loops are shown as positioned a little way from the lateral edges of the envelop. 'However, in practice these loops might be positioned at the other end if so desired.

It thus appears that by exerting tension upon the projecting portion of the loop a that the envelop may be opened in a simple and expeditious manner, and this manner of disrupting the envelop is one which I prefer to employ. It is possible to open the envelop by grasping the projecting portions of either of the end loops but the best results are obtained when the central loop is initially operated upon. Accordingly, in order to restrict the invention to its proper use, the thread C is so positioned, during the manufacture of the envelop, as to render the central loop 0 readily accessible, while the two end loops are rendered somewhat inaccessible. This is accomplished by impressing the fold at that portion thereof which is embraced by the end loops, as clearly shown in Fig. 2, so that the outer contours of said loops are substantially flush with the remainder of the edge, while the central loop 0 is, preferably, not impressed as are the end loops. The thread is, moreover, preferably made the same color as the envelop in which it is incorporated sothat when so constructed, the end loops will be scarcely visible, except upon minute inspection, while the central loop will project into a readily visible and accessible position. The combination of the loops or nooses along the edge or told of the envelop assures the complete opening of said edge at the termination of the disrupting operation, and the cut made by said thread is of an even nature, 2'. 0., no rough, uneven edges result. 7

Having thus fully described the invention, what I claim as new, and desire to secure by Letters Patent, is: I

1. As a new article of manufacture, a disruptive envelop embodying a thread pro vided intermediate its ends with a loop sewed through the envelop at one of the creased edges thereof, the ends of said thread extending in opposite directions along the interior of the crease to substantially the opposite ends thereof, at which points the ends of said thread pass through apertures in the creaseto the exterior of the envelop, said thread then converging toward the central loop and passing through apertures in the crease between the ends of the envelop and said loop, and the free ends of the thread being securely tied over the diverging interior portions of said thread, the exterior portions of the two end loops, thus formed, being impressed into the crease to such extent that they are substantially concealed thereby, and the intermediate loop being unimpressed and extending beyond the edge of the envelop into accessible position.

' 2. As a new article of manufacture, a disruptive envelop embodying a thread provided intermediate its ends with a loop sewed through the envelop at one of the creased edges thereof, the ends of said thread extending in opposite directions along the interiorof the crease to substantially the opposite ends thereof, at which points the ends of said thread pass through apertures in the crease to the exterior of the envelop, said thread then converging toward the central loop and passing through apertures in the crease between the ends of the envelop and said loop, and the free ends of the thread being securely tied over the diverging interior portions of said thread, and depressed channels formed in the crease in juxtaposition with the end loops whereby said two end loops lie in the depressed channels in substantially concealed positions while the central'loop extends beyond the envelop into accessible visible position.

3. As a new article of manufacture, an envelop embodying apiece of thread laid interiorly and along one of the edges thereof, said thread having a plurality of loops sewed at intervals through the'wall of the envelop, so that each loop embraces a portion of the crease along the edge, all of the loops,

save one, having the exterior portions thereof impressed into the envelop so that the outer contours of said loops are flush with the edge of the envelop and are substantially concealed thereby, the said, unimpressed loops extending beyond the edge into accessible visible position.

In testimony whereof I have signed my name to this specification.

ABRAHAM M. ROSENBLATT. 

